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Keep adding plaster, sprinkling it in the same manner. After a while the plaster will be visible for a few seconds before it disappears into the water. You are getting close... Keep adding plaster. When you add plaster and can count to 5 before it disappears, you have enough. Let it sit for 1-2 minutes to wet the plaster particles (this helps reduce air bubbles).
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Sherril Steele-Carlin |